无人机行业坠入凡尘无人机市场行业
百度 与她同行的丈夫陈大爷也联系不上，大家都十分着急，因为谭老太患有老年痴呆，走丢了说不出自己的信息，十分麻烦。
Questions about the different choices that aircraft designers (typically aerospace engineers) make in order to create an aircraft.
2,832 questions
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Why the Lancair speed brakes are so different?
Looking at different airplanes most airplanes with speed brakes have a similar aileron like speed brakes. Why does the Lancair uses this different design instead of the more common ones?
source
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How is this quadcopter so stable with props so close to CG/Fuselage? [migrated]
How can this quadcopter be so stable having its propellers so close to the center CG. Isn't this suppose to affect its balance?
Here is an image with a top and bottom view, you can see how the props ...
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Can a quadcopter do controlled flight after one motor failure?
I'm curious of the performance and/or if/how can a quadcopter recover after one motor failure.
I'm trying to find tests of that but the closest thing I've found is this Jetson One Motor failure test, ...
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How to increase inlet air intake quantity for static thrust?
Other than increasing the inlet total area what other things can you do to increase the total amount of air that gets suck trough an inlet for static thrust?
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Civilian airplanes with inside fuselage jet engines
Like the Stratos 714 inside fuselage engine design, are there any other civilian airplanes examples alike?
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General Aviation Accidents caused by a software glitch
Thinking about Lion Air, and Ethiopian Airlines Boeing 737 Max 8 Crashes in Commercial Aviation, I wonder if there has been an accident due to a software glitch on any aircraft in General Aviation.
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Why are new eVTOL aircraft designs use small fans or propellers which have lower lift efficiency than large rotors for VTOL operation?
For VTOL mode of operation, lift efficiency decreases with disc loading (i.e., the ratio of aircraft mass to area swept propeller) This makes large rotors more suitable for VTOL operation than small ...
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Can you yaw an airplane by only using differential thrust?
In a typical twin engine airplane, can one yaw the airplane by only using differential thrust?
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Which is easier to put together: jet VS piston aircraft? [closed]
If you were an aircraft manufacturer of a small 4 seat airplane and you only have to put together all the parts from your suppliers(engine, electronics, fuselage, etc), would an jet aircraft be built ...
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How Antonov An-24/26 control propeller speed
In the An-24/26 aircraft, there is no lever for propeller control. Instead, how is the propeller speed managed in these aircraft?
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Lower Specific Excess Power, Higher Altitudes Achievable?
This diagram plots the Ma, Altitude and Specific Excess Power (SEP) of a specific military aircraft:
Why does a lower SEP allow for higher altitudes and a larger range of flight speed?
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Why a pull leverlock switch VS a Flip Up Switch Guard Cover?
Looking at the 787's throttle quadrant, I noticed that the STAB control switch uses a typical red flip-up toggle switch guard safety cover while for the FUEL CONTROL there is a pull leverlock switch. ...
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Aft Placement of Wing and effects on pitching moment
Hello aviation community,
I have a question regarding a statement I heard from a tutor in an exercise session I had for "Aircraft Design Basics". Namely, they stated "The placement of ...
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Are there any non-Electronic Control Systems on the 787?
I know that the 787 is a fly-by-wire aircraft. However, does that means that there's not a single non electronic(direct/manual) control in the cockpit? For example, to my understanding there is a ...
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Why aren't egg-shaped laminar flow fuselages more common?
I came across this beautiful Phantom 3500 egg-shaped fuselage jet design.
(source)
I've been hearing for a while about laminar flow and how it can significantly increase efficiency with more ...
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